Dell Force10 S55T Installing the S55 System - Page 14

Cabinet placement, Rack mounting, Grounding, Fans and airflow, Power, Install the S55

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www.dell.com | support.dell.com Cabinet placement The S55 should be installed only in indoor cabinets designed for use in a controlled environment as described in the Site Selection heading. The S55 should not be installed in outside plant cabinets. The cabinet must meet the following criteria: • Minimum cabinet size and airflow are according to the EIA standard. • Minimum of 5 inches (12.7 cm) between the intake and exhaust vents and the cabinet wall. Rack mounting When you prepare your equipment rack, ensure that the rack is earth ground. The equipment rack must be grounded to the same ground point used by the power service in your area. The ground path must be permanent. Grounding The S55 is for use in a Common Bond Network. You must connect grounding cables as described in Chapter 4, Install the S55. Fans and airflow The S55 system fans support with 2 air flow options. Be sure to order the fans suitable to support your site's proper ventilation. Use a single type of fan in your system. Do not mix Reverse and Normal airflows in a single chassis. • Normal is airflow from I/O panel to power supply • Reversed is airflow from power supply to I/O panel For proper ventilation, position the S55 chassis in an equipment rack (or cabinet) with a minimum of five inches (12.7 cm) of clearance around exhaust vents. When two S55 systems are installed near each other, position the two chassis at least 5 inches (12.7 cm) apart to permit proper airflow. The acceptable ambient temperature ranges are listed in Environmental Parameters. The fan speed increases when the internal temperature reaches 72 degrees C, and decreases to normal speed when the temperature falls to 58 degrees C. The switch never intentionally turns off the fans. Use the show logging command to see the log messages. For details, see the System Logs chapters of the FTOS Command Reference and FTOS Configuration Guide. Power WARNING: Do not mix power supply types. The redundant power supplies must be the same type AC or DC. Use the appropriate power cord with the S55 chassis to connect the chassis to the applicable (AC or DC) power source. Power cords for US AC and DC are included with the system. When installing AC systems, follow the requirements of the National Electrical Code, ANSI/NFPA 70 where applicable. 14 | Site Preparations

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14
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Site Preparations
www.dell.com | support.dell.com
Cabinet placement
The S55 should be installed only in indoor cabinets designed for use in a controlled environment as
described in the Site Selection heading. The S55 should not be installed in outside plant cabinets.
The cabinet must meet the following criteria:
•
Minimum cabinet size and airflow are according to the EIA standard.
•
Minimum of 5 inches (12.7 cm) between the intake and exhaust vents and the cabinet wall.
Rack mounting
When you prepare your equipment rack, ensure that the rack is earth ground. The equipment rack must be
grounded to the same ground point used by the power service in your area. The ground path must be
permanent.
Grounding
The S55 is for use in a Common Bond Network. You must connect grounding cables as described in
Chapter
4, Install the S55
.
Fans and airflow
The S55 system fans support with 2 air flow options. Be sure to order the fans suitable to support your
site’s proper ventilation. Use a single type of fan in your system. Do not mix Reverse and Normal
airflows in a single chassis.
•
Normal is airflow from I/O panel to power supply
•
Reversed is airflow from power supply to I/O panel
For proper ventilation, position the S55 chassis in an equipment rack (or cabinet) with a minimum of five
inches (12.7 cm) of clearance around exhaust vents. When two S55 systems are installed near each other,
position the two chassis at least 5 inches (12.7 cm) apart to permit proper airflow. The acceptable ambient
temperature ranges are listed in
Environmental Parameters
.
The fan speed increases when the internal temperature reaches 72 degrees C, and decreases to normal
speed when the temperature falls to 58 degrees C. The switch never intentionally turns off the fans.
Use the
show logging
command to see the log messages. For details, see the System Logs chapters of the
FTOS Command Reference
and
FTOS Configuration Guide
.
Power
WARNING:
Do not mix power supply types. The redundant power supplies must be the same type AC
or
DC.
Use the appropriate power cord with the S55 chassis to connect the chassis to the applicable (AC or DC)
power source. Power cords for US AC and DC are included with the system.
When installing AC systems, follow the requirements of the National Electrical Code, ANSI/NFPA 70
where applicable.